[log] implement new logging model with module name support (#7385)

This commit implements new logging model in OpenThread. Each core
module can specify its own module name using `RegisterLogModule()`.
The registered log module name is then included in the all the log
messages emitted from the specific file. This model replaces and
enhances the log region model.

examples/apps/cli/cli_uart.cpp

@@ -33,11 +33,11 @@
 
 #include <openthread-system.h>
 #include <openthread/cli.h>
+#include <openthread/logging.h>
 
 #include "cli/cli_config.h"
 #include "common/code_utils.hpp"
 #include "common/debug.hpp"
-#include "common/logging.hpp"
 #include "utils/uart.h"
 
 #if OPENTHREAD_POSIX